With so many discoveries over the years, science is literally changing our minds about the optimal care and feeding of the brain. All of it is captivating. A great deal of it is unexpected. Do I have Alzheimer's? by developmental molecular biologist Dr. John Medina, gives you the facts-and the prescription to age well-in his engaging signature style. In this chapter, adapted from Medina's Brain Rules for Aging Well: 10 Principles for Staying Vital, Happy, and Sharp, you'll learn to look for 10 signs before asking, Do I have Alzheimer's? and why neuroscientists have a tough job teasing out typical, everyday aging from abnormal brain pathology. Just because you might show symptoms doesn't mean a pathology exists. One in ten Americans over sixty-five lives with Alzheimer's. It is the most expensive disease to treat in the world. The average amount of time people live with an Alzheimer's diagnosis before they die is four to eight years. You may already be experiencing the sometimes-unpleasant effects of the aging process. Or you may be deeply concerned about your loved ones who are. Either way, Do I have Alzheimer's? is for you.